Comparison of positive-pressure, passive ultrasonic, and laser-activated irrigations on smear-layer removal from the root canal surface.

Objective: The purpose of this study was to compare the efficacy of three irrigation techniques for smear-layer removal with 17% EDTA.

Background Data: Cleaning and shaping the root canal system during endodontic treatment produces a smear layer and hard tissue debris. Three irrigation techniques were tested for solution infiltration of this layer: positive-pressure irrigation, passive ultrasonic irrigation, and laser-activated irrigation.

Effect of Er:YAG laser-activated irrigation solution on Enterococcus Faecalis biofilm in an ex-vivo root canal model.

Unlabelled: Abstract Objective: The purpose of this study was to evaluate mineral content and surface morphology of root canals coated with Enterococcus faecalis biofilm after treatment with several endodontic irrigation solutions, with and without Er:YAG laser-activated irrigation (LAI).

Background Data: LAI has been introduced as a powerful method for root canal irrigation resulting in smear-layer removal from the root canal wall.

Methods: Distal and palatal roots from 60 freshly extracted human molars were used in this study.

Synergistic effect of Er:YAG laser irradiation in combination with chlorhexidine on the viability of Enterococcus faecalis: an in vitro study.

Objective: This study aimed to examine the potential synergistic effect of laser and chlorhexidine (CHX) applications on the growth of Enterococcus faecalis.

Background Data: CHX has been recommended for root canal irrigation because of its antibacterial properties. Er:YAG 2.

Rapidly progressive internal root resorption: a case report.

The etiology of internal root resorption is not fully understandable, trauma and chronic pulpitis are considered the main risk factors. Usually the process is asymptomatic and diagnosed upon routine radiographic examination. This case report presents a rapid progression of internal resorption related directly to traumatic injury.

The effect of CO(2) laser on the microhardness of human dental hard tissues compared with that of the high-speed drill.

Objective: The purpose of this study was to examine the effect of 9.6-microm CO(2) laser energy on the microhardness of human dental hard tissues compared with that of high-speed drill cavity preparation, and to determine the applicability of this laser in clinical treatment.

Materials And Methods: A total of 10 caries-free human single-rooted teeth were used for this study.

The effect of CO2 Laser on the permeability of dentinal tubules: a preliminary in vitro study.

Objectives: The purpose of this in vitro study was to determine whether there is a change in dentin permeability following 9.6-microm CO(2) laser irradiation and high-speed drilling.

Materials And Methods: Twenty permanent, intact, non-carious molars were selected.